Features1Data Display: The screen display is rich in content. All the various real time data are displayed on a display for easy user inspection. 2Low Power Consumption: The power supply adopts ultra low power consumption chips to reduce static standby power consumption and energy consumption. 3Dual Period Control Mode: USB 5V output for mobile phone and fan charging, dual period control mode, heat dissipation performance. 4MPPT Technology: The solar controller adopts MPPT technology. The MPPT controller can exert the maximum power of the battery board, so it can provide a larger charging current. 5Application: This solar controller automatically detects 12V and 24V system voltage, widely used for RV, commercial vehicle, boat, yacht.SpecificationItem Type: Solar Charge ControllerMaterial: Aluminum, ABSGross Weight: 326g / 11.5ozProduct Size: 14.3x8.7x4.5cm / 5.6x3.4x1.8inVoltage: 12V 24VM20A Style: 260W (12V) 520W (24V)Operating Temperature: -10-60Storage Temperature: -30-70Application: Solar controllerPackage List1 x Solar Controller 5 x Expansion Tube 5 x Short Screw 5 x Long Screw 5 x Nut 1 x Instruction Manual 1 x DC Head